Dark radiation and interacting scenarios

Article, Preprint OPEN
Diamanti, Roberta; Giusarma, Elena; Mena Requejo, Olga; Archidiacono, Maria; Melchiorri, Alessandro; (2013)
  • Journal: volume 87issn: 2470-0010
  • Related identifiers: doi: 10.1103/PhysRevD.87.063509
  • Subject: Cosmologia | High Energy Physics - Phenomenology | RadiaciĆ³ | Astrophysics - Cosmology and Nongalactic Astrophysics
    arxiv: Astrophysics::Cosmology and Extragalactic Astrophysics

An extra dark radiation component can be present in the universe in the form of sterile neutrinos, axions or other very light degrees of freedom which may interact with the dark matter sector. We derive here the cosmological constraints on the dark radiation abundance, ... View more
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